Patent 5083428: Fluid control system for power shovel
(POWER PLANTS : PRESSURE FLUID SOURCE AND MOTOR : Having condition responsive control in a system of distinct or separately operable outputs or output drive units : With plural pump or motive fluid source relationships selected by multiway valve : Suction pressure on motor regulated)

Patent 5083432: Tandem master cylinder with a third piston and chamber
(POWER PLANTS : PRESSURE FLUID SOURCE AND MOTOR : Pulsator : With control of or by a separate power fluid, etc. : Power fluid also fed into a separate expansible chamber directly driving output means : Pressurized fluid from manual master charges slave and controls power fluid to separate master)

Patent 5083478: Four-wheel vehicle drive system
(MOTOR VEHICLES : HAVING FOUR WHEELS DRIVEN : With manually operated means for disengaging drive to one or more, but fewer than all, of the four wheels : And assemblies for each of two wheels at other end, also)